January Weather in Perna, Finland

Last updated: August 23, 2025

In January, the average temperature in Perna, Finland hovers around -3°C (27°F), but don't be fooled by the mild average—minimums can plunge to -25°C (-13°F), while the rare maximums can reach 8°C (47°F). Expect a wet month with 54 mm (2.1 in) of precipitation spread over 11 days, and be prepared for high humidity levels averaging 98%. Dress warmly and enjoy the chilly charm!

January Temperature in Perna

In January in Perna, the average temperature is -3°C (27°F). The maximum can reach 8°C (47°F), while the minimum can plummet to as low as -25°C (-13°F). Travelers should be prepared for cold weather and dress warmly during their visit.

January Weather in Perna: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Perna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Perna, January typically has an average temperature of -3°C (27°F), with highs reaching up to 8°C (47°F) and lows dropping to around -25°C (-13°F).

Data source: Temperature data for Perna generated using information from the Copernicus Climate Change Service.

January Precipitation in Perna

In Perna in January, the precipitation amount is 54 mm (2.1 in), occurring over the course of 11 days.

January Precipitation Trends in Perna

The chart displays monthly precipitation patterns in Perna, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Perna, January typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Perna

In Perna in January, humidity is 98%. With an average temperature of -3°C (27°F), this humidity feels like walking through a damp fog, making every breath feel heavier and the chill slice deeper into your bones, creating a uniquely uncomfortable travel experience.

January Average Humidity in Perna

This chart illustrates the average monthly humidity levels in Perna, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Perna is approximately 98%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Perna

In Perna in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Perna.

Maximum UV Index Levels in Perna for January

The chart shows the monthly maximum UV Index (UVI) for Perna in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Perna typically reaches 1, which falls under the low exposure category.

Data source: Perna January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Perna Compares to Other Months

Weather in Perna varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Perna, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Perna, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	54 mm (2.1 inches)	98%	low
February Weather	-4°C (25°F)	49 mm (1.9 inches)	96%	low
March Weather	-1°C (31°F)	48 mm (1.9 inches)	93%	moderate
April Weather	4°C (40°F)	46 mm (1.8 inches)	87%	moderate
May Weather	11°C (51°F)	48 mm (1.9 inches)	75%	moderate
June Weather	17°C (62°F)	50 mm (2.0 inches)	74%	high
July Weather	18°C (65°F)	67 mm (2.6 inches)	80%	high
August Weather	17°C (62°F)	74 mm (2.9 inches)	85%	moderate
September Weather	12°C (53°F)	60 mm (2.4 inches)	90%	moderate
October Weather	7°C (45°F)	80 mm (3.2 inches)	94%	low
November Weather	3°C (37°F)	58 mm (2.3 inches)	94%	low
December Weather	-1°C (30°F)	75 mm (2.9 inches)	96%	low